Feature/erc777 #1159 (#1684)

* IERC777 from specs, constants returned, up to defaultOperators. (#1159)

* IERC777 oprarator approvals (#1159)

* ERC777 oprarator approvals fixes and tests

* IERC777 send and receive with ERC820 (#1159)

* ERC777 Add burn functions and fix send functions (#1159)

* ERC777 Make expectEvent compatible with web3.js 1.0 (#1159)

* ERC777 Add ERC820 deploy script (#1159)

* ERC777 Complete implementation of ERC777 (#1159)

This implementation conforms to the current EIP

* ERC777 Update ERC820 Registry contract to final version (#1159)

* ERC777 Move contracts to 'drafts' folder (#1159)

* ERC777: Update to ERC1820 registry and linter error fix (#1159)

* ERC777: implement recent changes of EIP777 (#1159)

* ERC777 Fix formatting (#1159)

* ERC777 Update to solc 0.5.2 (#1159)

* ERC777 Fix travis CI errors (#1159)

* ERC777 Fix linter errors again... (#1159)

* ERC777 Fix unit test (#1159)

* ERC777 Fix unit test again (#1159)

* Remove extra newlines.

* Rename ERC777Base to ERC777.

* Remove 'Token' from contract names.

* Replace ops for operators.

* Move operator check out of _send.

* Remove ERC777Burnable.

* Remove ERC1820Client, now using the interface directly.

* Minor internal refactors in contracts.

* Delete extra test helpers.

* Simplified tests.

* Add basic 777 tests.

* Add granularity send test.

* Add first operator send tests.

* Add burn tests.

* Refactor send and burn tests.

* Improve send burn refactor.

* Greatly improve test module.

* Burn instead of send removed tokens.

* Add operator tests.

* Improve send tests under changing operators.

* Refactor and merge send and burn tests.

* Add missing and not-implemented tests.

* Make _burn private.

* Fix typo.

* Greatly improve tokensToSend tests.

* Refactor hook tests.

* Fix hook tests.

* Update openzeppelin-test-helpers and ERC1820 address.

* Fix natspec indentation.

* Make interface functions external.

* Remove redundant private revoke and authorize functions.

* Improved readability of if statement.

* Remove unnecessary asserts.

* Add non-one granularity test.

* Fix hook call order in _mint.

* Fix _mint not reverting on failure to implement tokensReceived.

* Remove special case in operatorFn when from is 0.

* Refactor ERC777SenderMock.

* Add tokensReceived tests.

* switch to updated ganache-cli-coverage fork

* Fix linter errors.

* Add mint tests.

* Fix linter errors.

* Fix tests.

* Update test/drafts/ERC777/ERC777.test.js

Co-Authored-By: nventuro <nicolas.venturo@gmail.com>

* Add changelog entry.
This commit is contained in:
Bertrand Masius
2019-04-16 18:13:46 +02:00
committed by Nicolás Venturo
parent 963f1eb35b
commit 5a2b349992
11 changed files with 1983 additions and 3938 deletions

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@ -0,0 +1,533 @@
const { BN, constants, expectEvent, shouldFail } = require('openzeppelin-test-helpers');
const { ZERO_ADDRESS } = constants;
const ERC777SenderRecipientMock = artifacts.require('ERC777SenderRecipientMock');
function shouldBehaveLikeERC777DirectSendBurn (holder, recipient, data) {
shouldBehaveLikeERC777DirectSend(holder, recipient, data);
shouldBehaveLikeERC777DirectBurn(holder, data);
}
function shouldBehaveLikeERC777OperatorSendBurn (holder, recipient, operator, data, operatorData) {
shouldBehaveLikeERC777OperatorSend(holder, recipient, operator, data, operatorData);
shouldBehaveLikeERC777OperatorBurn(holder, operator, data, operatorData);
}
function shouldBehaveLikeERC777UnauthorizedOperatorSendBurn (holder, recipient, operator, data, operatorData) {
shouldBehaveLikeERC777UnauthorizedOperatorSend(holder, recipient, operator, data, operatorData);
shouldBehaveLikeERC777UnauthorizedOperatorBurn(holder, operator, data, operatorData);
}
function shouldBehaveLikeERC777DirectSend (holder, recipient, data) {
describe('direct send', function () {
context('when the sender has tokens', function () {
shouldDirectSendTokens(holder, recipient, new BN('0'), data);
shouldDirectSendTokens(holder, recipient, new BN('1'), data);
it('reverts when sending more than the balance', async function () {
const balance = await this.token.balanceOf(holder);
await shouldFail.reverting(this.token.send(recipient, balance.addn(1), data, { from: holder }));
});
it('reverts when sending to the zero address', async function () {
await shouldFail.reverting(this.token.send(ZERO_ADDRESS, new BN('1'), data, { from: holder }));
});
});
context('when the sender has no tokens', function () {
removeBalance(holder);
shouldDirectSendTokens(holder, recipient, new BN('0'), data);
it('reverts when sending a non-zero amount', async function () {
await shouldFail.reverting(this.token.send(recipient, new BN('1'), data, { from: holder }));
});
});
});
}
function shouldBehaveLikeERC777OperatorSend (holder, recipient, operator, data, operatorData) {
describe('operator send', function () {
context('when the sender has tokens', async function () {
shouldOperatorSendTokens(holder, operator, recipient, new BN('0'), data, operatorData);
shouldOperatorSendTokens(holder, operator, recipient, new BN('1'), data, operatorData);
it('reverts when sending more than the balance', async function () {
const balance = await this.token.balanceOf(holder);
await shouldFail.reverting(
this.token.operatorSend(holder, recipient, balance.addn(1), data, operatorData, { from: operator })
);
});
it('reverts when sending to the zero address', async function () {
await shouldFail.reverting(
this.token.operatorSend(
holder, ZERO_ADDRESS, new BN('1'), data, operatorData, { from: operator }
)
);
});
});
context('when the sender has no tokens', function () {
removeBalance(holder);
shouldOperatorSendTokens(holder, operator, recipient, new BN('0'), data, operatorData);
it('reverts when sending a non-zero amount', async function () {
await shouldFail.reverting(
this.token.operatorSend(holder, recipient, new BN('1'), data, operatorData, { from: operator })
);
});
it('reverts when sending from the zero address', async function () {
// This is not yet reflected in the spec
await shouldFail.reverting(
this.token.operatorSend(
ZERO_ADDRESS, recipient, new BN('0'), data, operatorData, { from: operator }
)
);
});
});
});
}
function shouldBehaveLikeERC777UnauthorizedOperatorSend (holder, recipient, operator, data, operatorData) {
describe('operator send', function () {
it('reverts', async function () {
await shouldFail.reverting(this.token.operatorSend(holder, recipient, new BN('0'), data, operatorData));
});
});
}
function shouldBehaveLikeERC777DirectBurn (holder, data) {
describe('direct burn', function () {
context('when the sender has tokens', function () {
shouldDirectBurnTokens(holder, new BN('0'), data);
shouldDirectBurnTokens(holder, new BN('1'), data);
it('reverts when burning more than the balance', async function () {
const balance = await this.token.balanceOf(holder);
await shouldFail.reverting(this.token.burn(balance.addn(1), data, { from: holder }));
});
});
context('when the sender has no tokens', function () {
removeBalance(holder);
shouldDirectBurnTokens(holder, new BN('0'), data);
it('reverts when burning a non-zero amount', async function () {
await shouldFail.reverting(this.token.burn(new BN('1'), data, { from: holder }));
});
});
});
}
function shouldBehaveLikeERC777OperatorBurn (holder, operator, data, operatorData) {
describe('operator burn', function () {
context('when the sender has tokens', async function () {
shouldOperatorBurnTokens(holder, operator, new BN('0'), data, operatorData);
shouldOperatorBurnTokens(holder, operator, new BN('1'), data, operatorData);
it('reverts when burning more than the balance', async function () {
const balance = await this.token.balanceOf(holder);
await shouldFail.reverting(
this.token.operatorBurn(holder, balance.addn(1), data, operatorData, { from: operator })
);
});
});
context('when the sender has no tokens', function () {
removeBalance(holder);
shouldOperatorBurnTokens(holder, operator, new BN('0'), data, operatorData);
it('reverts when burning a non-zero amount', async function () {
await shouldFail.reverting(
this.token.operatorBurn(holder, new BN('1'), data, operatorData, { from: operator })
);
});
it('reverts when burning from the zero address', async function () {
// This is not yet reflected in the spec
await shouldFail.reverting(
this.token.operatorBurn(
ZERO_ADDRESS, new BN('0'), data, operatorData, { from: operator }
)
);
});
});
});
}
function shouldBehaveLikeERC777UnauthorizedOperatorBurn (holder, operator, data, operatorData) {
describe('operator burn', function () {
it('reverts', async function () {
await shouldFail.reverting(this.token.operatorBurn(holder, new BN('0'), data, operatorData));
});
});
}
function shouldDirectSendTokens (from, to, amount, data) {
shouldSendTokens(from, null, to, amount, data, null);
}
function shouldOperatorSendTokens (from, operator, to, amount, data, operatorData) {
shouldSendTokens(from, operator, to, amount, data, operatorData);
}
function shouldSendTokens (from, operator, to, amount, data, operatorData) {
const operatorCall = operator !== null;
it(`${operatorCall ? 'operator ' : ''}can send an amount of ${amount}`, async function () {
const initialTotalSupply = await this.token.totalSupply();
const initialFromBalance = await this.token.balanceOf(from);
const initialToBalance = await this.token.balanceOf(to);
if (!operatorCall) {
const { logs } = await this.token.send(to, amount, data, { from });
expectEvent.inLogs(logs, 'Sent', {
operator: from,
from,
to,
amount,
data,
operatorData: null,
});
} else {
const { logs } = await this.token.operatorSend(from, to, amount, data, operatorData, { from: operator });
expectEvent.inLogs(logs, 'Sent', {
operator,
from,
to,
amount,
data,
operatorData,
});
}
const finalTotalSupply = await this.token.totalSupply();
const finalFromBalance = await this.token.balanceOf(from);
const finalToBalance = await this.token.balanceOf(to);
finalTotalSupply.should.be.bignumber.equal(initialTotalSupply);
finalToBalance.sub(initialToBalance).should.be.bignumber.equal(amount);
finalFromBalance.sub(initialFromBalance).should.be.bignumber.equal(amount.neg());
});
}
function shouldDirectBurnTokens (from, amount, data) {
shouldBurnTokens(from, null, amount, data, null);
}
function shouldOperatorBurnTokens (from, operator, amount, data, operatorData) {
shouldBurnTokens(from, operator, amount, data, operatorData);
}
function shouldBurnTokens (from, operator, amount, data, operatorData) {
const operatorCall = operator !== null;
it(`${operatorCall ? 'operator ' : ''}can burn an amount of ${amount}`, async function () {
const initialTotalSupply = await this.token.totalSupply();
const initialFromBalance = await this.token.balanceOf(from);
if (!operatorCall) {
const { logs } = await this.token.burn(amount, data, { from });
expectEvent.inLogs(logs, 'Burned', {
operator: from,
from,
amount,
data,
operatorData: null,
});
} else {
const { logs } = await this.token.operatorBurn(from, amount, data, operatorData, { from: operator });
expectEvent.inLogs(logs, 'Burned', {
operator,
from,
amount,
data,
operatorData,
});
}
const finalTotalSupply = await this.token.totalSupply();
const finalFromBalance = await this.token.balanceOf(from);
finalTotalSupply.sub(initialTotalSupply).should.be.bignumber.equal(amount.neg());
finalFromBalance.sub(initialFromBalance).should.be.bignumber.equal(amount.neg());
});
}
function shouldBehaveLikeERC777InternalMint (recipient, operator, amount, data, operatorData) {
shouldInternalMintTokens(operator, recipient, new BN('0'), data, operatorData);
shouldInternalMintTokens(operator, recipient, amount, data, operatorData);
it('reverts when minting tokens for the zero address', async function () {
await shouldFail.reverting(this.token.mintInternal(operator, ZERO_ADDRESS, amount, data, operatorData));
});
}
function shouldInternalMintTokens (operator, to, amount, data, operatorData) {
it(`can (internal) mint an amount of ${amount}`, async function () {
const initialTotalSupply = await this.token.totalSupply();
const initialToBalance = await this.token.balanceOf(to);
const { logs } = await this.token.mintInternal(operator, to, amount, data, operatorData);
expectEvent.inLogs(logs, 'Minted', {
operator,
to,
amount,
data,
operatorData,
});
const finalTotalSupply = await this.token.totalSupply();
const finalToBalance = await this.token.balanceOf(to);
finalTotalSupply.sub(initialTotalSupply).should.be.bignumber.equal(amount);
finalToBalance.sub(initialToBalance).should.be.bignumber.equal(amount);
});
}
function shouldBehaveLikeERC777SendBurnMintInternalWithReceiveHook (operator, amount, data, operatorData) {
context('when TokensRecipient reverts', function () {
beforeEach(async function () {
await this.tokensRecipientImplementer.setShouldRevertReceive(true);
});
it('send reverts', async function () {
await shouldFail.reverting(sendFromHolder(this.token, this.sender, this.recipient, amount, data));
});
it('operatorSend reverts', async function () {
await shouldFail.reverting(
this.token.operatorSend(this.sender, this.recipient, amount, data, operatorData, { from: operator })
);
});
it('mint (internal) reverts', async function () {
await shouldFail.reverting(
this.token.mintInternal(operator, this.recipient, amount, data, operatorData)
);
});
});
context('when TokensRecipient does not revert', function () {
beforeEach(async function () {
await this.tokensRecipientImplementer.setShouldRevertSend(false);
});
it('TokensRecipient receives send data and is called after state mutation', async function () {
const { tx } = await sendFromHolder(this.token, this.sender, this.recipient, amount, data);
const postSenderBalance = await this.token.balanceOf(this.sender);
const postRecipientBalance = await this.token.balanceOf(this.recipient);
await assertTokensReceivedCalled(
this.token,
tx,
this.sender,
this.sender,
this.recipient,
amount,
data,
null,
postSenderBalance,
postRecipientBalance,
);
});
it('TokensRecipient receives operatorSend data and is called after state mutation', async function () {
const { tx } = await this.token.operatorSend(
this.sender, this.recipient, amount, data, operatorData,
{ from: operator },
);
const postSenderBalance = await this.token.balanceOf(this.sender);
const postRecipientBalance = await this.token.balanceOf(this.recipient);
await assertTokensReceivedCalled(
this.token,
tx,
operator,
this.sender,
this.recipient,
amount,
data,
operatorData,
postSenderBalance,
postRecipientBalance,
);
});
it('TokensRecipient receives mint (internal) data and is called after state mutation', async function () {
const { tx } = await this.token.mintInternal(
operator, this.recipient, amount, data, operatorData,
);
const postRecipientBalance = await this.token.balanceOf(this.recipient);
await assertTokensReceivedCalled(
this.token,
tx,
operator,
ZERO_ADDRESS,
this.recipient,
amount,
data,
operatorData,
new BN('0'),
postRecipientBalance,
);
});
});
}
function shouldBehaveLikeERC777SendBurnWithSendHook (operator, amount, data, operatorData) {
context('when TokensSender reverts', function () {
beforeEach(async function () {
await this.tokensSenderImplementer.setShouldRevertSend(true);
});
it('send reverts', async function () {
await shouldFail.reverting(sendFromHolder(this.token, this.sender, this.recipient, amount, data));
});
it('operatorSend reverts', async function () {
await shouldFail.reverting(
this.token.operatorSend(this.sender, this.recipient, amount, data, operatorData, { from: operator })
);
});
it('burn reverts', async function () {
await shouldFail.reverting(burnFromHolder(this.token, this.sender, amount, data));
});
it('operatorBurn reverts', async function () {
await shouldFail.reverting(
this.token.operatorBurn(this.sender, amount, data, operatorData, { from: operator })
);
});
});
context('when TokensSender does not revert', function () {
beforeEach(async function () {
await this.tokensSenderImplementer.setShouldRevertSend(false);
});
it('TokensSender receives send data and is called before state mutation', async function () {
const preSenderBalance = await this.token.balanceOf(this.sender);
const preRecipientBalance = await this.token.balanceOf(this.recipient);
const { tx } = await sendFromHolder(this.token, this.sender, this.recipient, amount, data);
await assertTokensToSendCalled(
this.token,
tx,
this.sender,
this.sender,
this.recipient,
amount,
data,
null,
preSenderBalance,
preRecipientBalance,
);
});
it('TokensSender receives operatorSend data and is called before state mutation', async function () {
const preSenderBalance = await this.token.balanceOf(this.sender);
const preRecipientBalance = await this.token.balanceOf(this.recipient);
const { tx } = await this.token.operatorSend(
this.sender, this.recipient, amount, data, operatorData,
{ from: operator },
);
await assertTokensToSendCalled(
this.token,
tx,
operator,
this.sender,
this.recipient,
amount,
data,
operatorData,
preSenderBalance,
preRecipientBalance,
);
});
it('TokensSender receives burn data and is called before state mutation', async function () {
const preSenderBalance = await this.token.balanceOf(this.sender);
const { tx } = await burnFromHolder(this.token, this.sender, amount, data, { from: this.sender });
await assertTokensToSendCalled(
this.token, tx, this.sender, this.sender, ZERO_ADDRESS, amount, data, null, preSenderBalance
);
});
it('TokensSender receives operatorBurn data and is called before state mutation', async function () {
const preSenderBalance = await this.token.balanceOf(this.sender);
const { tx } = await this.token.operatorBurn(this.sender, amount, data, operatorData, { from: operator });
await assertTokensToSendCalled(
this.token, tx, operator, this.sender, ZERO_ADDRESS, amount, data, operatorData, preSenderBalance
);
});
});
}
function removeBalance (holder) {
beforeEach(async function () {
await this.token.burn(await this.token.balanceOf(holder), '0x', { from: holder });
(await this.token.balanceOf(holder)).should.be.bignumber.equal('0');
});
}
async function assertTokensReceivedCalled (token, txHash, operator, from, to, amount, data, operatorData, fromBalance,
toBalance = '0') {
await expectEvent.inTransaction(txHash, ERC777SenderRecipientMock, 'TokensReceivedCalled', {
operator, from, to, amount, data, operatorData, token: token.address, fromBalance, toBalance,
});
}
async function assertTokensToSendCalled (token, txHash, operator, from, to, amount, data, operatorData, fromBalance,
toBalance = '0') {
await expectEvent.inTransaction(txHash, ERC777SenderRecipientMock, 'TokensToSendCalled', {
operator, from, to, amount, data, operatorData, token: token.address, fromBalance, toBalance,
});
}
async function sendFromHolder (token, holder, to, amount, data) {
if ((await web3.eth.getCode(holder)).length <= '0x'.length) {
return token.send(to, amount, data, { from: holder });
} else {
// assume holder is ERC777SenderRecipientMock contract
return (await ERC777SenderRecipientMock.at(holder)).send(token.address, to, amount, data);
}
}
async function burnFromHolder (token, holder, amount, data) {
if ((await web3.eth.getCode(holder)).length <= '0x'.length) {
return token.burn(amount, data, { from: holder });
} else {
// assume holder is ERC777SenderRecipientMock contract
return (await ERC777SenderRecipientMock.at(holder)).burn(token.address, amount, data);
}
}
module.exports = {
shouldBehaveLikeERC777DirectSendBurn,
shouldBehaveLikeERC777OperatorSendBurn,
shouldBehaveLikeERC777UnauthorizedOperatorSendBurn,
shouldDirectSendTokens,
shouldDirectBurnTokens,
shouldBehaveLikeERC777InternalMint,
shouldInternalMintTokens,
shouldBehaveLikeERC777SendBurnMintInternalWithReceiveHook,
shouldBehaveLikeERC777SendBurnWithSendHook,
};

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const { BN, expectEvent, shouldFail, singletons } = require('openzeppelin-test-helpers');
const {
shouldBehaveLikeERC777DirectSendBurn,
shouldBehaveLikeERC777OperatorSendBurn,
shouldBehaveLikeERC777UnauthorizedOperatorSendBurn,
shouldDirectSendTokens,
shouldDirectBurnTokens,
shouldBehaveLikeERC777InternalMint,
shouldInternalMintTokens,
shouldBehaveLikeERC777SendBurnMintInternalWithReceiveHook,
shouldBehaveLikeERC777SendBurnWithSendHook,
} = require('./ERC777.behavior');
const ERC777 = artifacts.require('ERC777Mock');
const ERC777SenderRecipientMock = artifacts.require('ERC777SenderRecipientMock');
contract('ERC777', function ([
_, registryFunder, holder, defaultOperatorA, defaultOperatorB, newOperator, anyone,
]) {
const initialSupply = new BN('10000');
const name = 'ERC777Test';
const symbol = '777T';
const data = web3.utils.sha3('OZ777TestData');
const operatorData = web3.utils.sha3('OZ777TestOperatorData');
const defaultOperators = [defaultOperatorA, defaultOperatorB];
beforeEach(async function () {
this.erc1820 = await singletons.ERC1820Registry(registryFunder);
});
it('reverts with a granularity of zero', async function () {
await shouldFail.reverting(ERC777.new(holder, initialSupply, name, symbol, 0, []));
});
context('with a granularity of one', function () {
const granularity = new BN('1');
context('with default operators', function () {
beforeEach(async function () {
this.token = await ERC777.new(holder, initialSupply, name, symbol, granularity, defaultOperators);
});
it.skip('does not emit AuthorizedOperator events for default operators', async function () {
expectEvent.not.inConstructor(this.token, 'AuthorizedOperator'); // This helper needs to be implemented
});
describe('basic information', function () {
it('returns the name', async function () {
(await this.token.name()).should.equal(name);
});
it('returns the symbol', async function () {
(await this.token.symbol()).should.equal(symbol);
});
it('returns the granularity', async function () {
(await this.token.granularity()).should.be.bignumber.equal(granularity);
});
it('returns the default operators', async function () {
(await this.token.defaultOperators()).should.deep.equal(defaultOperators);
});
it('default operators are operators for all accounts', async function () {
for (const operator of defaultOperators) {
(await this.token.isOperatorFor(operator, anyone)).should.equal(true);
}
});
it('returns thte total supply', async function () {
(await this.token.totalSupply()).should.be.bignumber.equal(initialSupply);
});
it('is registered in the registry', async function () {
(await this.erc1820.getInterfaceImplementer(this.token.address, web3.utils.soliditySha3('ERC777Token')))
.should.equal(this.token.address);
});
});
describe('balanceOf', function () {
context('for an account with no tokens', function () {
it('returns zero', async function () {
(await this.token.balanceOf(anyone)).should.be.bignumber.equal('0');
});
});
context('for an account with tokens', function () {
it('returns their balance', async function () {
(await this.token.balanceOf(holder)).should.be.bignumber.equal(initialSupply);
});
});
});
context('with no ERC777TokensSender and no ERC777TokensRecipient implementers', function () {
describe('send/burn', function () {
shouldBehaveLikeERC777DirectSendBurn(holder, anyone, data);
context('with self operator', function () {
shouldBehaveLikeERC777OperatorSendBurn(holder, anyone, holder, data, operatorData);
});
context('with first default operator', function () {
shouldBehaveLikeERC777OperatorSendBurn(holder, anyone, defaultOperatorA, data, operatorData);
});
context('with second default operator', function () {
shouldBehaveLikeERC777OperatorSendBurn(holder, anyone, defaultOperatorB, data, operatorData);
});
context('before authorizing a new operator', function () {
shouldBehaveLikeERC777UnauthorizedOperatorSendBurn(holder, anyone, newOperator, data, operatorData);
});
context('with new authorized operator', function () {
beforeEach(async function () {
await this.token.authorizeOperator(newOperator, { from: holder });
});
shouldBehaveLikeERC777OperatorSendBurn(holder, anyone, newOperator, data, operatorData);
context('with revoked operator', function () {
beforeEach(async function () {
await this.token.revokeOperator(newOperator, { from: holder });
});
shouldBehaveLikeERC777UnauthorizedOperatorSendBurn(holder, anyone, newOperator, data, operatorData);
});
});
});
describe('mint (internal)', function () {
const to = anyone;
const amount = new BN('5');
context('with default operator', function () {
const operator = defaultOperatorA;
shouldBehaveLikeERC777InternalMint(to, operator, amount, data, operatorData);
});
context('with non operator', function () {
const operator = newOperator;
shouldBehaveLikeERC777InternalMint(to, operator, amount, data, operatorData);
});
});
});
describe('operator management', function () {
it('accounts are their own operator', async function () {
(await this.token.isOperatorFor(holder, holder)).should.equal(true);
});
it('reverts when self-authorizing', async function () {
await shouldFail.reverting(this.token.authorizeOperator(holder, { from: holder }));
});
it('reverts when self-revoking', async function () {
await shouldFail.reverting(this.token.revokeOperator(holder, { from: holder }));
});
it('non-operators can be revoked', async function () {
(await this.token.isOperatorFor(newOperator, holder)).should.equal(false);
const { logs } = await this.token.revokeOperator(newOperator, { from: holder });
expectEvent.inLogs(logs, 'RevokedOperator', { operator: newOperator, tokenHolder: holder });
(await this.token.isOperatorFor(newOperator, holder)).should.equal(false);
});
it('non-operators can be authorized', async function () {
(await this.token.isOperatorFor(newOperator, holder)).should.equal(false);
const { logs } = await this.token.authorizeOperator(newOperator, { from: holder });
expectEvent.inLogs(logs, 'AuthorizedOperator', { operator: newOperator, tokenHolder: holder });
(await this.token.isOperatorFor(newOperator, holder)).should.equal(true);
});
describe('new operators', function () {
beforeEach(async function () {
await this.token.authorizeOperator(newOperator, { from: holder });
});
it('are not added to the default operators list', async function () {
(await this.token.defaultOperators()).should.deep.equal(defaultOperators);
});
it('can be re-authorized', async function () {
const { logs } = await this.token.authorizeOperator(newOperator, { from: holder });
expectEvent.inLogs(logs, 'AuthorizedOperator', { operator: newOperator, tokenHolder: holder });
(await this.token.isOperatorFor(newOperator, holder)).should.equal(true);
});
it('can be revoked', async function () {
const { logs } = await this.token.revokeOperator(newOperator, { from: holder });
expectEvent.inLogs(logs, 'RevokedOperator', { operator: newOperator, tokenHolder: holder });
(await this.token.isOperatorFor(newOperator, holder)).should.equal(false);
});
});
describe('default operators', function () {
it('can be re-authorized', async function () {
const { logs } = await this.token.authorizeOperator(defaultOperatorA, { from: holder });
expectEvent.inLogs(logs, 'AuthorizedOperator', { operator: defaultOperatorA, tokenHolder: holder });
(await this.token.isOperatorFor(defaultOperatorA, holder)).should.equal(true);
});
it('can be revoked', async function () {
const { logs } = await this.token.revokeOperator(defaultOperatorA, { from: holder });
expectEvent.inLogs(logs, 'RevokedOperator', { operator: defaultOperatorA, tokenHolder: holder });
(await this.token.isOperatorFor(defaultOperatorA, holder)).should.equal(false);
});
it('cannot be revoked for themselves', async function () {
await shouldFail.reverting(this.token.revokeOperator(defaultOperatorA, { from: defaultOperatorA }));
});
context('with revoked default operator', function () {
beforeEach(async function () {
await this.token.revokeOperator(defaultOperatorA, { from: holder });
});
it('default operator is not revoked for other holders', async function () {
(await this.token.isOperatorFor(defaultOperatorA, anyone)).should.equal(true);
});
it('other default operators are not revoked', async function () {
(await this.token.isOperatorFor(defaultOperatorB, holder)).should.equal(true);
});
it('default operators list is not modified', async function () {
(await this.token.defaultOperators()).should.deep.equal(defaultOperators);
});
it('revoked default operator can be re-authorized', async function () {
const { logs } = await this.token.authorizeOperator(defaultOperatorA, { from: holder });
expectEvent.inLogs(logs, 'AuthorizedOperator', { operator: defaultOperatorA, tokenHolder: holder });
(await this.token.isOperatorFor(defaultOperatorA, holder)).should.equal(true);
});
});
});
});
describe('send and receive hooks', function () {
const amount = new BN('1');
const operator = defaultOperatorA;
// sender and recipient are stored inside 'this', since in some tests their addresses are determined dynamically
describe('tokensReceived', function () {
beforeEach(function () {
this.sender = holder;
});
context('with no ERC777TokensRecipient implementer', function () {
context('with contract recipient', function () {
beforeEach(async function () {
this.tokensRecipientImplementer = await ERC777SenderRecipientMock.new();
this.recipient = this.tokensRecipientImplementer.address;
// Note that tokensRecipientImplementer doesn't implement the recipient interface for the recipient
});
it('send reverts', async function () {
await shouldFail.reverting(this.token.send(this.recipient, amount, data));
});
it('operatorSend reverts', async function () {
await shouldFail.reverting(
this.token.operatorSend(this.sender, this.recipient, amount, data, operatorData, { from: operator })
);
});
it('mint (internal) reverts', async function () {
await shouldFail.reverting(
this.token.mintInternal(operator, this.recipient, amount, data, operatorData)
);
});
});
});
context('with ERC777TokensRecipient implementer', function () {
context('with contract as implementer for an externally owned account', function () {
beforeEach(async function () {
this.tokensRecipientImplementer = await ERC777SenderRecipientMock.new();
this.recipient = anyone;
await this.tokensRecipientImplementer.recipientFor(this.recipient);
await this.erc1820.setInterfaceImplementer(
this.recipient,
web3.utils.soliditySha3('ERC777TokensRecipient'), this.tokensRecipientImplementer.address,
{ from: this.recipient },
);
});
shouldBehaveLikeERC777SendBurnMintInternalWithReceiveHook(operator, amount, data, operatorData);
});
context('with contract as implementer for another contract', function () {
beforeEach(async function () {
this.recipientContract = await ERC777SenderRecipientMock.new();
this.recipient = this.recipientContract.address;
this.tokensRecipientImplementer = await ERC777SenderRecipientMock.new();
await this.tokensRecipientImplementer.recipientFor(this.recipient);
await this.recipientContract.registerRecipient(this.tokensRecipientImplementer.address);
});
shouldBehaveLikeERC777SendBurnMintInternalWithReceiveHook(operator, amount, data, operatorData);
});
context('with contract as implementer for itself', function () {
beforeEach(async function () {
this.tokensRecipientImplementer = await ERC777SenderRecipientMock.new();
this.recipient = this.tokensRecipientImplementer.address;
await this.tokensRecipientImplementer.recipientFor(this.recipient);
});
shouldBehaveLikeERC777SendBurnMintInternalWithReceiveHook(operator, amount, data, operatorData);
});
});
});
describe('tokensToSend', function () {
beforeEach(function () {
this.recipient = anyone;
});
context('with a contract as implementer for an externally owned account', function () {
beforeEach(async function () {
this.tokensSenderImplementer = await ERC777SenderRecipientMock.new();
this.sender = holder;
await this.tokensSenderImplementer.senderFor(this.sender);
await this.erc1820.setInterfaceImplementer(
this.sender,
web3.utils.soliditySha3('ERC777TokensSender'), this.tokensSenderImplementer.address,
{ from: this.sender },
);
});
shouldBehaveLikeERC777SendBurnWithSendHook(operator, amount, data, operatorData);
});
context('with contract as implementer for another contract', function () {
beforeEach(async function () {
this.senderContract = await ERC777SenderRecipientMock.new();
this.sender = this.senderContract.address;
this.tokensSenderImplementer = await ERC777SenderRecipientMock.new();
await this.tokensSenderImplementer.senderFor(this.sender);
await this.senderContract.registerSender(this.tokensSenderImplementer.address);
// For the contract to be able to receive tokens (that it can later send), it must also implement the
// recipient interface.
await this.senderContract.recipientFor(this.sender);
await this.token.send(this.sender, amount, data, { from: holder });
});
shouldBehaveLikeERC777SendBurnWithSendHook(operator, amount, data, operatorData);
});
context('with a contract as implementer for itself', function () {
beforeEach(async function () {
this.tokensSenderImplementer = await ERC777SenderRecipientMock.new();
this.sender = this.tokensSenderImplementer.address;
await this.tokensSenderImplementer.senderFor(this.sender);
// For the contract to be able to receive tokens (that it can later send), it must also implement the
// recipient interface.
await this.tokensSenderImplementer.recipientFor(this.sender);
await this.token.send(this.sender, amount, data, { from: holder });
});
shouldBehaveLikeERC777SendBurnWithSendHook(operator, amount, data, operatorData);
});
});
});
});
context('with no default operators', function () {
beforeEach(async function () {
this.token = await ERC777.new(holder, initialSupply, name, symbol, granularity, []);
});
it('default operators list is empty', async function () {
(await this.token.defaultOperators()).should.deep.equal([]);
});
});
});
context('with granularity larger than 1', function () {
const granularity = new BN('4');
beforeEach(async function () {
initialSupply.mod(granularity).should.be.bignumber.equal('0');
this.token = await ERC777.new(holder, initialSupply, name, symbol, granularity, defaultOperators);
});
it('returns the granularity', async function () {
(await this.token.granularity()).should.be.bignumber.equal(granularity);
});
context('when the sender has tokens', function () {
const from = holder;
shouldDirectSendTokens(from, anyone, new BN('0'), data);
shouldDirectSendTokens(from, anyone, granularity, data);
shouldDirectSendTokens(from, anyone, granularity.muln(2), data);
it('reverts when sending an amount non-multiple of the granularity', async function () {
await shouldFail.reverting(this.token.send(anyone, granularity.subn(1), data, { from }));
});
shouldDirectBurnTokens(from, new BN('0'), data);
shouldDirectBurnTokens(from, granularity, data);
shouldDirectBurnTokens(from, granularity.muln(2), data);
it('reverts when burning an amount non-multiple of the granularity', async function () {
await shouldFail.reverting(this.token.burn(granularity.subn(1), data, { from }));
});
});
shouldInternalMintTokens(anyone, defaultOperatorA, new BN('0'), data, operatorData);
shouldInternalMintTokens(anyone, defaultOperatorA, granularity, data, operatorData);
shouldInternalMintTokens(anyone, defaultOperatorA, granularity.muln(2), data, operatorData);
it('reverts when minting an amount non-multiple of the granularity', async function () {
await shouldFail.reverting(
this.token.mintInternal(defaultOperatorA, anyone, granularity.subn(1), data, operatorData)
);
});
});
});